assertThat(Sets.<Object>cartesianProduct(x, y))
        .containsExactly(exp1, exp2, exp3, exp4)
        .inOrder();
  }

  public void testCartesianProductTooBig() {
    Set<Integer> set = ContiguousSet.create(Range.closed(0, 10000), DiscreteDomain.integers());
    try {
      Sets.cartesianProduct(set, set, set, set, set);
      fail("Expected IAE");
    } catch (IllegalArgumentException expected) {
    }
  }